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Table 1 Distribution of female total lung cancer, AC and SCC from 2001 to 2005 by quartiles of air pollutants between 1994 and 1998a

From: Cell type specificity of female lung cancer associated with sulfur dioxide from air pollutants in Taiwan: An ecological study

Variables

All casesb

AC

SCC

 

No. of cases

ASR

No. of cases

ASR

No. of cases

ASR

SO2 concentration (ppb)

   ≤ 3.74

854

37.35

513

22.98

70

2.93

   3.74 - 5.52

1209

40.20

785

26.25

114

3.71

   5.52 - 7.75

1280

39.96

834

26.09

127

3.99

   > 7.75

1390

41.12

843

25.23

145

4.37

CO concentration (ppm)

   ≤ 0.55

574

38.35

336

22.84

64

4.29

   0.55 - 0.72

736

36.33

466

23.29

65

3.36

   0.72 - 0.88

1338

39.81

825

24.84

132

4.12

   > 0.88

2085

41.85

1348

27.31

195

3.72

NO2 concentration (ppb)

   ≤ 17.09

619

38.02

364

22.70

62

3.90

   17.09 - 22.18

900

38.92

554

24.47

91

3.85

   22.18 - 27.63

1176

39.24

732

22.46

124

4.19

   > 27.63

2038

41.21

1325

27.08

179

3.60

NO concentration (ppb)

   ≤ 5.29

726

38.43

430

23.53

74

3.96

   5.29 - 8.18

727

37.99

433

22.93

81

4.30

   8.18 - 12.37

1199

38.15

765

24.51

121

3.82

   > 12.37

2081

42.27

1347

27.65

180

3.66

O3 concentration (ppb)

   ≤ 19.18

1932

43.08

1252

28.39

174

3.85

   19.18 - 22.01

1208

37.13

761

23.45

123

3.87

   22.01 - 25.33

822

37.93

502

23.31

81

3.74

   > 25.33

771

39.83

460

24.54

78

3.96

PM10 concentration (μg/m3)

   ≤ 50.04

1302

39.28

814

25.06

109

3.22

   50.04 - 61.23

1362

40.83

884

26.67

126

3.72

   61.23 - 76.30

1168

42.88

737

27.35

119

4.42

   > 76.30

901

36.23

540

22.09

102

4.16

  1. a AC, adenocarcinoma; ASR, age-standardized incidence rate; CO, carbon monoxide; NO, nitric oxide; NO2, nitrogen dioxide; O3, ozone; PM10, particulate matter < 10 μm; SCC, squamous cell carcinoma; SO2, sulfur dioxide.
  2. b All cases included AC, SCC, large cell carcinoma, and small cell carcinoma.